修改40551答案

题库0.3/Problems.json

@@ -768880,7 +768880,7 @@
             "第三单元"
         ],
         "genre": "解答题",
-        "ans": "(1) $f(x)=2\\sin(2x+\\dfrac{\\pi}3)$, 振幅为$2$, 初相为$\\dfrac{\\pi}{3}$, 最小正周期为$\\pi$;\\\\\n(2) 单调增区间为$[k\\pi-\\dfrac{5\\pi}{12},k\\pi+\\dfrac{\\pi}{12}]$, $k\\in \\mathbf{Z}$,最小值为$2$, 此时$x=k\\pi-\\dfrac{5\\pi}{12}$, $k\\in \\mathbf{Z}$;\\\\\n(3) $0<a\\leq \\dfrac 4{199\\pi}$",
+        "ans": "(1) $f(x)=2\\sin(2x+\\dfrac{\\pi}3)$, 振幅为$2$, 初相为$\\dfrac{\\pi}{3}$, 最小正周期为$\\pi$;\\\\\n(2) 单调增区间为$[k\\pi-\\dfrac{5\\pi}{12},k\\pi+\\dfrac{\\pi}{12}]$, $k\\in \\mathbf{Z}$,最小值为$-2$, 此时$x=k\\pi-\\dfrac{5\\pi}{12}$, $k\\in \\mathbf{Z}$;\\\\\n(3) $0<a\\leq \\dfrac 4{199\\pi}$",
         "solution": "",
         "duration": -1,
         "usages": [],
@@ -768888,7 +768888,8 @@
         "edit": [
             "20230403\t王伟叶",
             "20240406\t王伟叶",
-            "20240406\t王伟叶"
+            "20240406\t王伟叶",
+            "20240407\t王伟叶"
         ],
         "same": [],
         "related": [],